HF PackerAmp V4, Руководство по монтажу

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come loose when removing the circuit board from the
case in the future.
•
Locate two 4-40 x ¾ inch threaded round spacer and
two 4-40 x ¼ inch length screws.
•
Install the spacers on the top side of the circuit board
near VR1 and VR2. Tighten the screws extra snug so
they will not come loose when removing the filter
module in the future.

Note: Identify the correct size wire for T2 and T3
Fabrication and Assembly of T2
•
Two stacked FT50-43 torroid cores are used for this
transformer. Cut two #22 AWG wire (0.026 inch diameter)
15 inches long. Do not twist the wires. To prevent chaffing
of the wire on the edge of ceramic cores, insert a common
soda straw (same length as the thickness of the two
stacked cores). Through the stacked cores, insert the two
parallel wires. Bend the wires into a U-shape. Holding the
two wires together in one hand with the cores at the bottom
of the U-Shape, grasp the wires in the rear and insert the
wires on front right side through the core four additional
times. Pull each wrap snug keeping the wires parallel
without crossovers. After completion of the loops on the
right side, pass the remaining wires through the cores on
the front left side 5 times. Pull each wrap snug keeping the
wires parallel without crossovers. You will now have 10
turns passing through the core.
•
Separate and scrape the ends of the wires so you can
measure continuity and isolation to determine the start and
finish of each wire.
Circuit board showing cores with wire exits for T2 and T3
•
Winding # 1 goes to pins 1 and 2. Winding #2 goes to
pins 3 and 4.
•
Insert the wires through the appropriate holes and pull
snug to form the leads in the shape required.